• Supported Platforms
• M Series
• T Series

Configuring Local Interface Switching in Layer 2 Circuits

You can configure a virtual circuit entirely on the local router, terminating the circuit on a local interface. Possible uses for this feature include being able to enable switching between Frame Relay DLCIs.

To configure a virtual circuit to terminate locally, include the local-switching statement:

You can include this statement at the following hierarchy levels:

• [edit protocols l2circuit]
• [edit logical-systems logical-system-name protocols l2circuit]

Configuring the Interfaces for the Local Interface Switch

Local interface switching requires you to configure at least two interfaces:

• Starting interface—Include the interface statement at the [edit protocols l2circuit local-switching] hierarchy level.
• Ending interface—Include the end-interface statement at the [edit protocols l2circuit local-switching interface interface-name] hierarchy level.

You can also configure virtual circuit interface protection for each local interface:

• Protect interface for the starting interface—Include the protect-interface statement at the [edit protocols l2circuit local-switching interface interface-name] hierarchy level.
• Protect interface for the ending interface—Include the protect-interface statement at the [edit protocols l2circuit local-switching interface interface-name end-interface] hierarchy level.

For more information about how to configure protect interfaces, see Configuring Interfaces for Layer 2 Circuits.

Enabling Local Interface Switching When the MTU Does Not Match

You can include this statement at the following hierarchy levels:

• [edit protocols l2circuit local-switching interface interface-name]
• [edit logical-systems logical-system-name protocols l2circuit local-switching interface interface-name]